1. Bailey, H. R., Dowling, J. L., Swanton, C. H. and Davies, E. (1971). Studies in depression. I. Cingulo-tractotomy in the treatment of severe affective illness. Med. J. Aust., 1, 8–12
2. Bailey, H. R., Dowling, J. L. and Davies, E. (1973). Studies in Depression. III. The control of affective illness by cingulo-tractotomy: A review of 150 cases. Med. J. Aust., 2, 366–371
3. Bartlett, J. R. and Bridges, P. K. (1977). The extended subcaudate tractotomy lesion. In Neurosurgical Treatment in Psychiatry, Pain and Epilepsy (eds. Sweet, William H., Obrador, Sixto and Martin-Rodriguez, J. G. ), University Park Press, Baltimore
4. Birley, J. L. T. (1964). Modified frontal leucotomy: A review of 106 cases. Br. J. Psychiat., 110, 211–221
5. Bridges, P. K. and Bartlett, J. R. (1977). Psychosurgery: yesterday and today. Br. J. Psychiat., 131, 249–260